<template>
<div>
  <!--    面包屑 导航区域-->
  <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>商品管理</el-breadcrumb-item>
    <el-breadcrumb-item>添加商品</el-breadcrumb-item>
  </el-breadcrumb>
  <el-card>
<!--    提示区域-->
    <el-alert title="添加商品信息" type="info" center show-icon :closable="false"></el-alert>
<!--    步骤条-->
    <el-steps :space="300" :active="activeIndex-0" finish-status="success" align-center>
      <el-step title="基本信息"></el-step>
      <el-step title="商品参数"></el-step>
      <el-step title="商品属性"></el-step>
      <el-step title="商品图片"></el-step>
      <el-step title="商品内容"></el-step>
      <el-step title="完成"></el-step>
    </el-steps>
<!--    tab栏区域-->
    <el-form :model="addForm" :rules="addFormRules" ref="ruleForm" label-width="100px" label-position="top">
    <el-tabs v-model="activeIndex" :tab-position="tabPosition"  :before-leave="beforeTablaver" @tab-click="tabClicked">
      <el-tab-pane label="基本信息" name="0">
        <el-form-item label="商品名称" prop="goods_name">
          <el-input v-model="addForm.goods_name"></el-input>
        </el-form-item>
        <el-form-item label="商品价格" prop="goods_price">
          <el-input v-model="addForm.goods_price" type="number"></el-input>
        </el-form-item>
        <el-form-item label="商品重量" prop="goods_weight">
          <el-input v-model="addForm.goods_weight"></el-input>
        </el-form-item>
        <el-form-item label="商品数量" prop="goods_number">
          <el-input v-model="addForm.goods_number" type="number"></el-input>
        </el-form-item>
        <el-form-item label="商品分类" prop="goods_cat">
          <el-cascader
          expand-trigger="hover"
          :options="CateList"
          :props="CateProps"
          v-model="addForm.goods_cat" @change="handleChange"></el-cascader>
        </el-form-item>
      </el-tab-pane>
      <el-tab-pane label="商品参数" name="1">
        <el-form-item :label="item.attr_name" v-for="item in manyTabaData" :key="item.attr_id">
<!--          复选框-->
          <el-checkbox-group v-model="item.attr_vals">
            <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border> </el-checkbox>
          </el-checkbox-group>
          <!--          复选框-->
        </el-form-item>
      </el-tab-pane>
      <el-tab-pane label="商品属性" name="2">
        <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
          <el-input v-model="item.attr_vals"></el-input>
        </el-form-item>
      </el-tab-pane>
      <el-tab-pane label="商品图片" name="3" >
<!--        图片上传-->
        <el-upload
          :action="updateUrl"
          :on-preview="handlePreview"
          :on-remove="handleRemove"
          list-type="picture"
          :headers="headerObj"
          :on-success="handlesucess">
          <el-button size="small" type="primary">点击上传</el-button>
        </el-upload>
      </el-tab-pane>
      <el-tab-pane label="商品内容" name="4">
<!--        父文本编辑器-->
        <quill-editor v-model="addForm.goods_introduce">

        </quill-editor>
<!--        添加商品的按钮-->
        <el-button type="primary" class="bthadd" @click="add">添加商品</el-button>
      </el-tab-pane>
    </el-tabs>
    </el-form>
  </el-card>
<!--  图片预览-->
  <el-dialog
    title="图片预览"
    :visible.sync="privedialogVisible"
    width="50%"
    >
      <img :src="previewPath" alt="" class="previewImg">
  </el-dialog>
</div>
</template>

<script>
//import
import _ from 'lodash'
export default {
  name: "add",
  data(){
    return{
    activeIndex:'0',
      tabPosition: 'left',
      //添加商品的对象
      addForm:{
        goods_name:'',
        goods_price:0,
        goods_weight:0,
        goods_number:0,
        //商品所属分嘞数组
        goods_cat:[],
        //图片的数组
        pics:[],
        //商品的详情描述
        goods_introduce:'',
        attrs:[]
      },
      //商品分类列表
      CateList:[],
      CateProps:{
        label:'cat_name',
        value:'cat_id',
        children:'children'
      },
      //动态参数列表数据
      manyTabaData:[],
      //静态数据列表数据
      onlyTableData:[],
      addFormRules:{
        goods_name:[
          { required: true, message: '请输入商品名称', trigger: 'blur'}
        ],
        goods_price:[{
          required: true, message: '请输入商品价格', trigger: 'blur'
        }],
        goods_weight:[{
          required: true, message: '请输入商品的重量', trigger: 'blur'
        }],
        goods_number:[{
          required: true, message: '请输入商品的数量', trigger: 'blur'
        }],
        goods_cat:[
          {
            required: true, message: '请输入选中商品分类', trigger: 'blur'
          }
        ]
      },
      //上传图片的基本文档
      updateUrl:'http://127.0.0.1:8888/api/private/v1/upload',
      //图片上传组件的请求图
      headerObj:{
        Authorization: window.sessionStorage.getItem('token')
      },
      previewPath:'',
      privedialogVisible:false
    }
  },
  created() {
    this.getCatList()
  },
  methods:{
    //获取所有商品函数
   async getCatList(){
   const {data:res}  =await this.$http.get('categories')
     if (res.meta.status!==200){
       return this.$message.error('商品列表获取失败')
     }else {
       this.$message.success('商品列表获取成功')
     }
     this.CateList=res.data
     console.log(this.CateList)
    },
    //级联选择器变换
    handleChange(){
      console.log(this.addForm.goods_cat)
      if (this.addForm.goods_cat.length!==3){
        this.addForm.goods_cat=[]
      }
    },
    beforeTablaver(activeName,oldActiveName){
      if (oldActiveName==='0' && this.addForm.goods_cat.length!==3){
        this.$message.error('请先选择商品分类')
       return  false
      }
    },
   async tabClicked(){
      console.log(this.activeIndex)
    //  证明访问的是动态参数面板
      if (this.activeIndex==='1'){
          const{data:res}  = await this.$http.get(`categories/${this.cateId}/attributes`,{
          params:{sel:'many'}
        })
        if (res.meta.status!==200){
          return this.$message.error('获取失败')
        }
        console.log(res.data)
        res.data.forEach(item=>{
          item.attr_vals=item.attr_vals.length===3?[] : item.attr_vals.split(' ')
        })
        this.manyTabaData=res.data
      }else if (this.activeIndex==='2'){
        const{data:res}  = await this.$http.get(`categories/${this.cateId}/attributes`,{
          params:{sel:'only'}
        })
        if (res.meta.status!==200){
          return this.$message.error("获取静态数据失败")
        }else {
          this.$message.success('获取成功')
        }
        console.log(res.data)
        this.onlyTableData=res.data
      }
    },
    //处理图片预览效果
    handlePreview(file){
      console.log(file)
      this.previewPath=file.response.data.url
      this.privedialogVisible=true
    },
    //处理图片的操作
    handleRemove(file){

      const filePath=file.response.data.tmp_path

    const i= this.addForm.pics.findIndex(x=>x.pic===filePath)
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm)
    },
    //监听图片上传成功的图片
    handlesucess(response){
      console.log(response)
    //  拼接得到一个图片信息对象
      const picInfo={pics: response.data.tmp_path}
    //  2.将图片信息对象push到pisc这个数组上
      this.addForm.pics.push(picInfo)
      console.log(this.addForm)
    },
  //  田间商品
    add() {
      this.$refs.ruleForm.validate(async valid => {
        if (!valid) {
          return this.$message.error('请填写必要的表单项！')
        }
        // 执行添加的业务逻辑
        // lodash   cloneDeep(obj)
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        // 处理动态参数
        this.manyTabaData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          this.addForm.attrs.push(newInfo)
        })
        // 处理静态属性
        this.onlyTableData.forEach(item => {
          const newInfo = { attr_id: item.attr_id, attr_value: item.attr_vals }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        console.log(form)

        // 发起请求添加商品
        // 商品的名称，必须是唯一的
        const { data: res } = await this.$http.post('goods', form)

        if (res.meta.status !== 201) {
          return this.$message.error('添加商品失败！')
        }

        this.$message.success('添加商品成功！')
        this.$router.push('/goods')
      })
    }

  },
  computed:{
    cateId(){
      if (this.addForm.goods_cat.length===3){
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style lang="less" scoped>
.el-checkbox{
  margin: 0 0 10px 0 !important;
}
.previewImg{
  width: 100%;
}
.bthadd{
  margin-top: 15px;
}
</style>
